Berry's Manufacturing Preferred Plated Pistol Bullets .40 cal/10mm .401in 165 gr FP 1000/ct JF. They are more affordable than jacketed rounds and won't foul your barrel with lead. .40 COL = 1.125" 10mm COL = 1.260" Can withstand velocities up to 1250 fps. Specifications for Berry's Manufacturing Preferred Plated Pistol Bullets .40 cal/10mm .401in 165 gr FP: Manufacturer: Berry's Manufacturing Bullet Type: Flat Point Projectile Caliber: .40 Caliber Package Contents: Berry's Manufacturing Preferred Plated Pistol Bullets .40 cal/10mm .401in 165 gr FP Berry's Manufacturing JF31500: Preferred Plated Pistol Bullets .40 cal/10mm .401in 165 gr FP 1000/ct